Database Management-Issue 116 Oracle Exadata 06-ESS-Part 2 (202301114) It has been a full week since the last serious technology sharing, and 11 days have passed since the last Exadata special article. Today I finished writing ESS in one go. After all, I have to fly to Beijing again tomorrow. 1 Smart Scan In fact, smart […]
Tag: par
One Demo handles the front-end and back-end multi-part uploading of large files, resumed uploading at breakpoints, and instantaneous uploading.
1Foreword File uploading is very common in project development. Most projects will involve the uploading of pictures, audios, videos, and files. Usually a simple Form can upload small files, but when encountering large files, such as more than 1GB, or When the user’s network is relatively slow, simple file upload is not applicable. The user […]
ST table (Spars table) of doubling ideas and data structures
ST table (Spars table) of doubling ideas and data structures **ST table is a data structure based on the idea of doubling and used to solve the problem of repeatable contribution. ** First, understand what the idea of doubling is. The doubling algorithm, as the name suggests, is to multiply by a power of 2. […]
Super detailed explanation of ajax parameters in jq
Table of Contents 1. url: The URL address to which the request is to be sent. 2. type: type of request, optional parameters, including GET, POST, PUT, DELETE, etc. The default is GET. 3. data: The data to be sent to the server, which can be a string, array or object. Default is null. 4. […]
Wen Xin Yi Yan VS iFlytek Spark VS chatgpt (134) — Introduction to Algorithms 11.2 6 questions
6. Using Go language, assume that n keywords are stored in a hash table of size m and conflicts are resolved through the chaining method. At the same time, the length of each chain is known, including the length L of the longest chain. Please describe the process of selecting an element uniformly and randomly […]
Spring Boot implements various parameter verifications. It is so well written. It is recommended to collect it!
Hello everyone, I am a passerby~~~ Click on the card below to follow me, java dry goods will be delivered in time I have written an article about the use of Spring Validation before, but I still feel that I am superficial. This time I plan to thoroughly understand Spring Validation. This article will introduce […]
SparkSQL’s Analyzed LogicalPlan generation process
After AstBuilder processing, the Unresolved LogicalPlan was obtained. There are two objects that have not been resolved in the logical operator tree: UnresolvedRelation and UnresolvedAttribute. The main role of the Analyzer is to parse these two nodes or expressions into typed objects. In this process, Catalog related information is needed. Because it inherits from the […]
Wen Xin Yi Yan VS iFlytek Spark VS chatgpt (133) — Introduction to Algorithms 11.2 5 questions
5. Using Go language, assume that a set with n keywords is stored in a hash table of size m. Try to explain that if these keywords all originate from the universe U, and |U|>nm, then there is a subset of size n in U, which consists of all keywords hashed to the same slot, […]
Wen Xin Yi Yan VS iFlytek Spark VS chatgpt (132) — Introduction to Algorithms 11.2 4 questions
4. Using Go language, explain how to allocate and release the storage space occupied by elements by linking all unoccupied slots into a free linked list inside the hash table. It is assumed that a slot can store a flag, an element plus one or two pointers. All dictionary and free linked list operations should […]
Explosive performance! Python multi-process mode implements multi-core CPU parallel computing
Article directory Preface 1. Multi-process mode in Python 2. Methods to improve program execution efficiency 1. Multiple processes execute tasks concurrently 2. Process pool 3.Message queue 4. Shared memory 5.Asynchronous IO Summarize About Python technical reserves 1. Learning routes in all directions of Python 2. Python basic learning video 3. Excellent Python learning books 4. […]